Well, then he has a problem because I don't think he has a thing besides the accusers testimony.
The bipolar diagnosis and the alcohol plus Flexeril help because both could affect the accuser's perceptions. I don't think she hallucinated a rape but I don't think she perceives things normally either. That probably helps explain why she can't keep any of her stories straight.
Given enough alcohol and muscle relaxant I'd bet good money that you can be induced to have an hallucination, and you will believe that it's real!
I don't think she hallucinated a rape. She conjured it up to avoid a court-ordered drug test and the likelihood of going to jail.